Convert UK gallons per minute to Litres per second
Convert UK gallons per minute (gpm) to Litres per second (L/s) instantly and accurately.
Conversion Formula
L/s = gpm × 0.07576816667
About UK gallons per minute
The UK (imperial) gallon per minute (gpm) equals 4.54609×10⁻³/60 ≈ 7.577×10⁻⁵ m³/s, historically used in British plumbing design, pump curves, and water-treatment plant sizing. Pre-metric UK water-industry capacity tables and pump manufacturers quoted flows in UK gal/min; legacy British Standard BS EN pump curves often show both units. 1 UK gpm ≈ 7.577×10⁻⁵ m³/s ≈ 4.546 L/min.
About Litres per second
The litre per second (L/s) equals 10⁻³ m³/s, the standard unit for municipal water-supply engineering, fire-fighting flows, and HVAC system air handling. A fire hydrant delivers 15-30 L/s; a household mains water connection is typically 0.1-0.5 L/s; a large building HVAC chilled-water loop circulates 50-200 L/s. 1 L/s = 10⁻³ m³/s = 3.6 m³/h ≈ 15.85 US gal/min.
Quick Reference Table
| UK gallons per minute (gpm) | Litres per second (L/s) |
|---|---|
| 1 gpm | 0.0757682 L/s |
| 2 gpm | 0.151536 L/s |
| 5 gpm | 0.378841 L/s |
| 10 gpm | 0.757682 L/s |
| 25 gpm | 1.8942 L/s |
| 50 gpm | 3.78841 L/s |
| 100 gpm | 7.57682 L/s |